Improvement in padlocks



UNrrnn STATES PATENT rricn.

ABRAHAM HUFFER AND NATHANIEL SEHNER, OF HAGEBSTOWN, MD..

IMPROVEMENT IN PADLOCKS.

' Specifica-lion forming part of Letters Patent No. 48,558, dated July 4, 1865.'

To all whom it may concern:

Be it known that we, ABRAHAM BUFFER and NATHANIEL SEHNER, of Hagerstown, in the county of Washington and State of Maryland, have invented a new and useful "Improvement in Padlocks; and we do hereby declare that the following is a full andl'exact description thereof, reference beingv had to the `accompanying drawings, and to the letters of reference marked thereon.

Our invention consists in a peculiar construction of padlock provided with two bolts, one of which is operated by the key and is employed to fasten the other bolt, which secures the hasp.

In the accompanying drawings, Figure l is a View of the interior of the lock, (the front 4closed it is fastened by means of the springbolt B, which, in turn, is fastened by means of another bolt, A. This bolt A is provided with a spring, K, and a tumbler, L, and is worked in the usual manner by a key onthe pivot I, two turns of the key being required to complete the motion of the bolt either forward or backward. The bolt B is pressed forward by the action of the coiled spring C. Another spring, D, is employed to gently push the bolt B upward, and, as the bolt advances, engage the notch b with thestop or staple S, and thus hold the bolt securely in place and prevent opening the lock by concussion. A secondary key, F, Fig. 3, is placed upon lthe pivot F of the escutcheon G, which serves as a handle for turning this key. When the padlock is closed this secondary key turns free of the bolt B, as seen in Fig. 2 at F 5 but upon pressing down the hasp M the bolt B is brought into range of the key, as seen in Fig. l.

In order to unlock our padlock the escutcheon G and key F should be rst so turned as to bring the point of key F just beyond the notch t, as seen in Fig. 2, thus allowing the point of the main key (orpivot I) to pass the notch f, Eig. 3. By two turns ofthe main key the bolt A. is carried down clear of the boltB. Then the escutcheon G is again turned so as to bring the point of key F opposite the notch tin bolt B. Now the hasp M is pushed down into thelock, carrying with it the bolt B, which is thus brought into the range of key F, when by turning the escutcheon the bolt B is moved back, as seen in Fig. l. Care must be taken to open the hasp M before the key F is turned too far and the bolt B allowed to spring forward under the action of spring C. r

Instead of the notch b, a pin or other stop may be employed, and the bolt B may be pushed down by a s'taple or thumb-piece instead of the hasp; also, a lever, spring or other means may be used for turning key F in place of the escutcheon; or the escutcheon may be removed from the pivot, turned part way round, and replaced in different position, thus requiring the escutcheon to be brought into new positions in opening the lock. Other small variations may be made without departing from our invention. By turning the escutcheon upon the pivot a person already familiar with the lock may be puzzled and unable to move thebolts.

3. The use ot' the hasp or its equivalent for` moving the bolt laterally into the range of the key, substantially as specified.

' ABRAHAM BUFFER. t NATHANIEL SEHNER. Witnesses:

W. FREANOR, WM. M. TICE; 

